Pipe-coupling.



J. H. ALLAN.

PIPE COUPLING. APPLICATION FILED AUG. 6, 1909.

Patented Max: 21, 1911.

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JAMES HARRY ALLAN, OF HAZEL HURST, PENNSYLVANIA.

PIPE-COUPLING.

Specification of Letters Patent.

Application filed August 6, 1909.

To all whom it may concern:

Be it known that I, JAMES H. ALLAN, of Hazel Hurst, in the county ofMcKean and State of Pennsylvania, have invented certain new and usefulImprovements in Pipe- Couplings; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to an improvement in pipe couplings, the objectbeing to provide a simple, and inexpensive pipe coupling, that can bereadily and quickly applied to the abutting ends of smooth pipes such asare extensively used for oil and natural gas, and it consists in apacking surrounding the abutting ends of the pipes, and peculiarlyconstructed sleeves adapted to compress the packing around the ends ofthe pipe, and over the joint between the pipes, and be clamped to thelatter, by the act of connecting the sleeves.

My invention further consists in the details of construction as will bemore fully explained and pointed out in the claims.

In the accompanying drawings, Figure l is a view in elevation of thecoupling assembled; Fig. 2 is a view in longitudinal section of same;Fig. 3 is a view in end elevation of Fig. 1; Fig. 4 is a view inelevation of the outer sleeve, and Fig. 5 is a similar view of the innersleeve.

1 represents the pipe section having smooth abutting ends, and 3 is apacking, which may be of rubber, fiber, or any other suitable material.This packing may also be in the form of a cylinder to fit over thepipes, or in the form of a sheet or strip wrapped around the pipes andcovering the joint.

4 is the inner sleeve, provided at its outer end with a head 5 and aflange 6. The sleeve is, normally cylindrical, or but slightly taperingexternally, and its bore is conical or tapering, its greatest diameterbeing at its end farthest removed from its head 5. The smaller diameterof the bore of the sleeve is slightly greater than the diameter of thepipe, while the head 5 and flange 6 are bored to snugly fit the pipes,the opening however being sufliciently large to permit the sleeve to bereadily placed n position on the pipe. Th1s sleeve 4 1s slotted as at 7from its free end up to a point near the head, as shown in Fig. 5,

and when assembled is substantially inclosed by the sleeve 8 providedwith a head 9 and flanges 10 and 11, the former being integral with thehead, and the latter integral with the opposite end of the sleeve. Thebore or opening in the head 9 of sleeve 8 is adapted to snugly fit thepipe 1, while the body of the sleeve is tapered internally, its borebeing outwardly flaring from the shoulder 12 of head 9 to the endcarrying flange 11. The sleeves 4 and 8 are of such size, that whensleeve 8 is forced over the slotted sleeve 7, the sections of the latterformed by the slots 7, will be forced inwardly toward the packing untilthe internal surface of the sleeve 7, which as previously explained isnormally tapering, will be substantially cylindrical thus tightlycompressing the packing 3 against the pipes 1, and locking the couplingto the pipes, and clamping the two pipes together by the frictionbetween the two sleeves, and the friction and pressure of the innersleeve against the packing.

In applying the coupling, the sections thereof are placed on the pipes,one on each, and the two pipes are then brought together end to end asshown, and the packing applied to the oint so as to cover the joint, andlap the pipes on opposite sides. Sleeve 4 is then moved into positionover the packing and also over the joint, after which sleeve 8 is movedover the slitted end of the sleeve 4. The bolts 13 are then passedthrough holes in the flanges 611 and 10 of the two sleeves, and nuts 14are screwed onto the ends of the bolts. By now tightening up on the nutsthe sleeves will be moved toward each other thus causing the slottedsleeve 4, to be forced inwardly against the packing. The telescopingmovement of the sleeves, compresses the packing endwise, while thecompression of the inner sleeve 4 compresses and forces the packingsolidly against abutting ends of the pipes, thereby closing and packingthe oint and locking the two pipes solidly together. When the twosleeves are in their operative position, the flanged end 11 rests onsleeve 4 between the head 5 and closed ends of the slots in sleeve 4,thus completely closing the slots and forming a tight joint with sleeve4, thereby not only adapting the coupling for oil or other liquid pipesbut also for gas pipes.

My improvement is simple in construction is effective in use, can beadapted for any size pipes and can be applied by unskilled labor andwithout the use of any tools other than a wrench.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope of my invention hence I would have it understoodthat I do not wish to confine myself to the exact construction andarrangement of parts shown and described, but,

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is:

1. In a pipe coupling, the combination with an integral sleeve rigid atits outer end and yielding from its inner end throughout a portion ofits length, the said sleeve adapted to embrace the abutting ends of twopipe sections, of a second integral sleeve rigid throughout its lengthand having a tapering bore adapted to overlap the yielding portion ofsaid first mentioned sleeve and force the latter toward the pipes, andbolts passing through both sleeves for rigidly locking them together.

2; In a pipe coupling the combination with a packing embracing theabutting ends of two pipes and an integral sleeve rigid :at its outerend and yielding from its inner end throughout a portion of its length,the said sleeve inclosing the packing, 01": a second sleeve having atapering bore adapted to overlap the yielding portion of the firstmentioned sleeve and compress the latter against the packing, and boltspassing through both sleeves for rigidly locking them together.

3. In a coupling, the combination of two flanged telescopic sleeves, theinner one of which is integral and counterbored and yielding at itsinner end, and the outer one integral and continuous at both ends andprovided with a tapering bore, a packing within the counterbored sectionof the inner sleeve and adapted to embrace the abutting edges of twopipes and means engaging the flanges of the two sleeves for rigidlylocking them together.

4:. In a coupling, the combination with an inner sleeve continuous andintegral at one end and slotted at the other end and provided with aflange at its continuous end, and an outer sleeve having a flange ateach end and provided with a conical bore adapted to receive the slottedend of the 5 inner sleeve, and means for locking the two sleevestogether.

5. In a pipe coupling, the combination with an integral sleeve yieldingat one end and provided with a flange at its other end, ot a secondsleeve having a flange and a tapering bore adapted to receive theyielding end of the first mentioned sleeve and force the latter towardthe pipes, and means engaging the flanges of both sleeves for rigidlyRor E. DIAMENT, A. SPRINGSTEEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

